Arjen van der Meijden wrote: > Afaik Tom hadn't finished his patch when I was testing things, so I don't > know. But we're in the process of benchmarking a new system (dual quad-core > Xeon) and we'll have a look at how it performs in the postgres 8.2dev we > used before, the stable 8.2.4 and a fresh HEAD-checkout (which we'll call > 8.3dev). I'll let you guys (or at least Tom) know how they compare in our > benchmark.
So, ahem, did it work? :-) > On 18-5-2007 15:12 Alvaro Herrera wrote: >> Tom Lane wrote: >>> Arjen van der Meijden told me that according to the tweakers.net >>> benchmark, HEAD is noticeably slower than 8.2.4, and I soon confirmed >>> here that for small SELECT queries issued as separate transactions, >>> there's a significant difference. I think much of the difference stems >>> from the fact that we now have stats_row_level ON by default, and so >>> every transaction sends a stats message that wasn't there by default >>> in 8.2. When you're doing a few thousand transactions per second >>> (not hard for small read-only queries) that adds up. >> So, did this patch make the performance problem go away? -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support ---------------------------(end of broadcast)--------------------------- TIP 2: Don't 'kill -9' the postmaster
